Drive for paper manufacturing machines



oa. 23, 194s.

A. VANDEN BERGH A DRIVE FOR PAPER MANUFACTURING MACHINES Filed Feb. 28. 1944 2 Sheets-'Sheet l metal .I represents the screen, provided with the usual diaphragm 2. Driveunits making up the present invention and designated by the reference numeral 3, are situnecting rod 9 is slidable. The videdrwith-vthe side panels I0, suitably secured 'to the frame I, and a drive shaft II extends Patented Coti 23 UNITED STATE DRIVE FOR s 'PATENT PAPER MANUFACTURING MACHINE S OFFICE' I 4- Alfred Vanden Bergh, Green Bay, Wis. Application February 28V, 1944, Serial No. 524,275

1 Claim.

Thisinvention relates generally to drives for paper manufacturing machines, and more particularly to pulp screening apparatus.

My present invention is especially designed as an improvement in the construction shown in letters Patent No. 29, 1943.

The primary object of my present invention is 2,323,168 issued to me on June In carrying out my presentinvention, the lower end of the vertical connecting rod 9, has a direct threaded connection, as at I2, with the center of the horizontal guide Ebar I3. The guide bar I3 comprises the central semi-circular'portion' I4, in

`which is mounted the circular roller I5, and the Y opposite end portions I6 mounted to slide up and to provide a drive of the character specied, in

which the initial cost andmaintenance will be considerably less than any other now in use.

A further object of my inventionVi is to provide an improved drive of the character specified that will be smoother` in operation, and whereby greater production may be attained since greater out inthe appended claimpresently appear.

- pendicular rods I'I between the upper faces of the'4 In the accompanying drawings, which are for I illustrative purposes only and are therefore not A drawn to scale:

Figure 1. is a fragmentary side elevation, illustrating myvpresent improvements. l Figure 2 is a vertical sectional view,.taken on line 2-2 of Figure 1, looking in the direction inv dicated by the arrows` Figure 3 is a similar view, taken on line 3 3 of Figure 2, and Figure '4 is a horizontal section,

taken on line 4 4 of Figure 2.

Referring to the drawings for a more particular description of my invention, and in which drawings likeparts are designated by like reference characters throughout the several views, the nucustomary vat of a pulp ated under the vat I, and each drive unit consiste of a box-like structurecomprisinglthe vU-v 1 shaped frame I, consistingof the upright legs 5 .and transverse connecting bottom 6. The frame 4 further comprises a. bridge piece 'I at the top,

Aconnecting the upper'ends of the legs 5 and extending through the aforesaid bridge piece, is a guide bushing 81 through which the `vertical conthrough the lower portions of thepanelsof each box is further prodown on the perpendicular rods Il. The lower' ends IB of the rods Il are threaded in suitable blocks I9 situated` atl the bottom of the frame 4. A cam 20, preferably formed at its edge with four corresponding straight iiat inclined faces 2 I sep-v arated by the minor arcuate or rounded segments 22, is fixed to the shaftv I I,` within the frame l of eachdrive' unit,- and worksagainst the edge of the circular roller I5, the purpose of which will Coil compression springs 23 are disposed around the upper Yends ofthe perend portions of the guide bar I3, andthe lower ends of the cylindrical sleeves. The sleeves 2l extend through corresponding openings 25 in the top member I of the frame 4v and are held in placev by the lock nuts 26, screwingon the lupper threaded ends of the rods I'I.

In practice', when the drive shaft II rotates,"

the diaphragm 6 is causedv to raise and lower to actuate the pulp in the vat 5, by means of the cam 20, roller I 5, guide bar I3,A connecting rod 9 and compression springs 23.

Among the many advantages derived through the use of my improvements, some of the more important may be brieiiy enumerated as follows:

First: The initial cost and subsequent maintenance of my improved camV drive is considerably less than any others now in use.

Second: The drive operates smoother and imv parts perfect up and down movement'to the diaphragm, without loss of motion or danger of tearing the rubber diaphragm.

Third: More production may be attained, 'as Y greater speed will not resultin damage to any of the parts.

Fourth: Wear and friction of cams and rollers is reduced to the minimum.

Fifth;l 'I'heconstruction is simplied and all A 4bolts on the insideof the frame or-housingare eliminated.

From the foregoing description taken in con- Y nection Vwith the drawings, it is thought that the construction, operation and advantages of my present improvements will be understood. without requiring 'a more extended explanation.

Variouschanges inthe form, proportions and minor details of construction may be resorted .tol

2 without departing from the principles or sacriiic'-A ing any of the advantages of my invention, as

deiined in the appended claim. Having described my invention, what I claim as new and desire to secure by netten Patent is:

In combinationY with the diaphragm ot a pulp screening apparatus used in paper manufacturing machines, a horinontal drive shaft, a frame through which the drive shaft operates, a cam asomar mounted on the drive shaft, within said frame, 10

a horizontal guide bar, comprising a central somtcircular portion or housing and straight horizontai end portions, a circular roller oi a diameter mwstantiauy equal to that 'or the cam, mounted in the central semi-circular housing of the guide bar and working against the edge oi' the cam, a vertical endwise movable rod, connected at its lower end to the central housing oi' the guide bar and movable with the latter, perpendicular guide rods for the straight horizontal iend portions o! the guide bar, cylindrical sleeves extending through the top member of the frame, and coil compression springs disposed around the upper Lends of said perpendicular guide rods between sleeves and the end portions of the guide bar.

" ALFRED VANDEN BERGH. 

